package com.xiaomaoaixue.system.service.impl;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.UUID;
import java.util.stream.Collectors;

import com.xiaomaoaixue.common.core.utils.*;
import com.xiaomaoaixue.common.log.enums.BusinessType;
import com.xiaomaoaixue.system.api.domain.SysUser;
import com.xiaomaoaixue.system.service.ISysUserService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.xiaomaoaixue.common.core.constant.UserConstants;
import com.xiaomaoaixue.common.core.exception.CustomException;
import com.xiaomaoaixue.common.datascope.annotation.DataScope;
import com.xiaomaoaixue.system.api.domain.SysDept;
import com.xiaomaoaixue.system.api.domain.SysRole;
import com.xiaomaoaixue.system.domain.vo.TreeSelect;
import com.xiaomaoaixue.system.mapper.SysDeptMapper;
import com.xiaomaoaixue.system.mapper.SysRoleMapper;
import com.xiaomaoaixue.system.service.ISysDeptService;

/**
 * 部门管理 服务实现
 * 
 * @author xiaomaoaixue
 */
@Service
public class SysDeptServiceImpl implements ISysDeptService
{

    private static final Logger log = LoggerFactory.getLogger(SysDeptServiceImpl.class);

    @Autowired
    private SysDeptMapper deptMapper;

    @Autowired
    private SysRoleMapper roleMapper;

    @Autowired
    private ISysUserService userService;

    /**
     * 查询部门管理数据
     * 
     * @param dept 部门信息
     * @return 部门信息集合
     */
    @Override
    @DataScope(deptAlias = "d")
    public List<SysDept> selectDeptList(SysDept dept)
    {
        return deptMapper.selectDeptList(dept);
    }

    /**
     * 构建前端所需要树结构
     * 
     * @param depts 部门列表
     * @return 树结构列表
     */
    @Override
    public List<SysDept> buildDeptTree(List<SysDept> depts)
    {
        List<SysDept> returnList = new ArrayList<SysDept>();
        List<Long> tempList = new ArrayList<Long>();
        for (SysDept dept : depts)
        {
            tempList.add(dept.getDeptId());
        }
        for (Iterator<SysDept> iterator = depts.iterator(); iterator.hasNext();)
        {
            SysDept dept = (SysDept) iterator.next();
            // 如果是顶级节点, 遍历该父节点的所有子节点
            if (!tempList.contains(dept.getParentId()))
            {
                recursionFn(depts, dept);
                returnList.add(dept);
            }
        }
        if (returnList.isEmpty())
        {
            returnList = depts;
        }
        return returnList;
    }

    /**
     * 构建前端所需要下拉树结构
     * 
     * @param depts 部门列表
     * @return 下拉树结构列表
     */
    @Override
    public List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts)
    {
        List<SysDept> deptTrees = buildDeptTree(depts);
        return deptTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
    }

    /**
     * 根据角色ID查询部门树信息
     * 
     * @param roleId 角色ID
     * @return 选中部门列表
     */
    @Override
    public List<Integer> selectDeptListByRoleId(Long roleId)
    {
        SysRole role = roleMapper.selectRoleById(roleId);
        return deptMapper.selectDeptListByRoleId(roleId, role.isDeptCheckStrictly());
    }

    /**
     * 根据部门ID查询信息
     * 
     * @param deptId 部门ID
     * @return 部门信息
     */
    @Override
    public SysDept selectDeptById(Long deptId)
    {
        return deptMapper.selectDeptById(deptId);
    }

    /**
     * 根据ID查询所有子部门（正常状态）
     * 
     * @param deptId 部门ID
     * @return 子部门数
     */
    @Override
    public int selectNormalChildrenDeptById(Long deptId)
    {
        return deptMapper.selectNormalChildrenDeptById(deptId);
    }

    /**
     * 是否存在子节点
     * 
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public boolean hasChildByDeptId(Long deptId)
    {
        int result = deptMapper.hasChildByDeptId(deptId);
        return result > 0 ? true : false;
    }

    /**
     * 查询部门是否存在用户
     * 
     * @param deptId 部门ID
     * @return 结果 true 存在 false 不存在
     */
    @Override
    public boolean checkDeptExistUser(Long deptId)
    {
        int result = deptMapper.checkDeptExistUser(deptId);
        return result > 0 ? true : false;
    }

    /**
     * 校验部门名称是否唯一
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public String checkDeptNameUnique(SysDept dept)
    {
        Long deptId = StringUtils.isNull(dept.getDeptId()) ? -1L : dept.getDeptId();
        SysDept info = deptMapper.checkDeptNameUnique(dept.getDeptName(), dept.getParentId());
        if (StringUtils.isNotNull(info) && info.getDeptId().longValue() != deptId.longValue())
        {
            return UserConstants.NOT_UNIQUE;
        }
        return UserConstants.UNIQUE;
    }

    /**
     * 新增保存部门信息
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int insertDept(SysDept dept)
    {
        // id自增玩不下去， 因为企业微信的id和用户关联
        if(dept.getDeptId()==null || dept.getDeptId()==0){
            dept.setDeptId(IdUtils.getLongId());
        }
        if(dept.getParentId()!=null && dept.getParentId()>0) {
            SysDept info = deptMapper.selectDeptById(dept.getParentId());
            // 如果父节点不为正常状态,则不允许新增子节点
            if (!UserConstants.DEPT_NORMAL.equals(info.getStatus())) {
                throw new CustomException("部门停用，不允许新增");
            }
            dept.setAncestors(info.getAncestors() + "," + dept.getParentId());
        }
        return deptMapper.insertDept(dept);
    }

    /**
     * 修改保存部门信息
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int updateDept(SysDept dept)
    {
        SysDept newParentDept = deptMapper.selectDeptById(dept.getParentId());
        SysDept oldDept = deptMapper.selectDeptById(dept.getDeptId());
        if (StringUtils.isNotNull(newParentDept) && StringUtils.isNotNull(oldDept))
        {
            String newAncestors = newParentDept.getAncestors() + "," + newParentDept.getDeptId();
            String oldAncestors = oldDept.getAncestors();
            dept.setAncestors(newAncestors);
            updateDeptChildren(dept.getDeptId(), newAncestors, oldAncestors);
        }
        int result = deptMapper.updateDept(dept);
        if (UserConstants.DEPT_NORMAL.equals(dept.getStatus()))
        {
            // 如果该部门是启用状态，则启用该部门的所有上级部门
            updateParentDeptStatus(dept);
        }
        return result;
    }

    /**
     * 修改该部门的父级部门状态
     * 
     * @param dept 当前部门
     */
    private void updateParentDeptStatus(SysDept dept)
    {
        String updateBy = dept.getUpdateBy();
        dept = deptMapper.selectDeptById(dept.getDeptId());
        dept.setUpdateBy(updateBy);
        deptMapper.updateDeptStatus(dept);
    }

    /**
     * 修改子元素关系
     * 
     * @param deptId 被修改的部门ID
     * @param newAncestors 新的父ID集合
     * @param oldAncestors 旧的父ID集合
     */
    public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors)
    {
        List<SysDept> children = deptMapper.selectChildrenDeptById(deptId);
        for (SysDept child : children)
        {
            child.setAncestors(child.getAncestors().replace(oldAncestors, newAncestors));
        }
        if (children.size() > 0)
        {
            deptMapper.updateDeptChildren(children);
        }
    }

    /**
     * 删除部门管理信息
     * 
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public int deleteDeptById(Long deptId)
    {
        return deptMapper.deleteDeptById(deptId);
    }


    /**
     * 递归列表
     */
    private void recursionFn(List<SysDept> list, SysDept t)
    {
        // 得到子节点列表
        List<SysDept> childList = getChildList(list, t);
        t.setChildren(childList);
        for (SysDept tChild : childList)
        {
            if (hasChild(list, tChild))
            {
                recursionFn(list, tChild);
            }
        }
    }

    /**
     * 得到子节点列表
     */
    private List<SysDept> getChildList(List<SysDept> list, SysDept t)
    {
        List<SysDept> tlist = new ArrayList<SysDept>();
        Iterator<SysDept> it = list.iterator();
        while (it.hasNext())
        {
            SysDept n = (SysDept) it.next();
            if (StringUtils.isNotNull(n.getParentId()) && n.getParentId().longValue() == t.getDeptId().longValue())
            {
                tlist.add(n);
            }
        }
        return tlist;
    }

    /**
     * 判断是否有子节点
     */
    private boolean hasChild(List<SysDept> list, SysDept t)
    {
        return getChildList(list, t).size() > 0 ? true : false;
    }



    /**
     * 同步企业微信员工
     * @return
     */
    @Override
    public String syncDept(List<SysDept> deptList, Boolean isUpdateSupport, String operName) {

        if (StringUtils.isNull(deptList) || deptList.size() == 0) {
            return "没有需要同步的部门数据！";
        }

        Threads.SINGLE_THREAD_POOL.execute(new Runnable() {
            @Override
            public void run() {
                int successNum = 0;
                int failureNum = 0;
                StringBuilder successMsg = new StringBuilder();
                StringBuilder failureMsg = new StringBuilder();
                ISysDeptService deptService = SpringUtils.getBean(ISysDeptService.class);

                for (SysDept dept : deptList) {
                    try {
                        // 验证是否存在这个用户
                        SysDept d = deptMapper.selectDeptById(dept.getDeptId());
                        if (StringUtils.isNull(d)) {

                            dept.setCreateBy(operName);
                            deptService.insertDept(dept);
                            successNum++;
                            successMsg.append("<br/>" + successNum + "、部门 " + dept.getDeptName() + " 同步成功");
                        } else if (isUpdateSupport) {
                            d.setUpdateBy(operName);
                            deptService.updateDept(dept);
                            successNum++;
                            successMsg.append("<br/>" + successNum + "、部门 " + dept.getDeptName() + " 更新成功");
                        } else {
                            failureNum++;
                            failureMsg.append("<br/>" + failureNum + "、部门 " + dept.getDeptName() + " 已存在");
                        }
                    } catch (Exception e) {
                        failureNum++;
                        String msg = "<br/>" + failureNum + "、部门 " + dept.getDeptName() + " 导入失败：";
                        failureMsg.append(msg + e.getMessage());
                        log.error(msg, e);
                    }
                }
                if (failureNum > 0) {
                    log.warn("很抱歉，同步失败！共 " + failureNum + " 条数据格式不正确，错误如下：" + failureMsg.toString());
                } else {
                    log.info("恭喜您，数据已全部导入成功！共 " + successNum + " 条，数据如下：");
                }
            }
        });

        return "后台开始同步部门数据，请稍后关注进度";
    }

    /**
     * 增量同步部门
     * @param dept
     * @param valueOf
     */
    @Override
    public void weCallBackSysDept(SysDept dept, BusinessType type) {
        log.info(type.name() + "增量同步部门：" + dept.getDeptId()+dept.getDeptName());

        // 先查询User
        SysDept d = deptMapper.selectDeptById(dept.getDeptId());


        switch (type) {
            case INSERT:
                if(d==null){
                    insertDept(dept);
                }else {
                    log.warn(type.name() + "增量同步部门：" + dept.getDeptName()+"失败，id重复:"+dept.getDeptId());
                }
                break;
            case UPDATE:
                if(d!=null) {
                    deptMapper.updateDept(dept);
                }
                else {
                    log.warn(type.name() + "增量同步部门：" + dept.getDeptName()+"失败，部门不存在:"+dept.getDeptId());
                }
                break;
            case DELETE:
                if(d!=null) {
                    // 物理删除
                    deptMapper.physicalDeleteDeptById(dept.getDeptId());
                }
                else {
                    log.warn(type.name() + "增量同步部门：" + dept.getDeptName()+"失败，部门不存在:"+dept.getDeptId());
                }

                break;

        }

    }

    public static void main(String[] args) {
    }
}
